<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <!-- 头部搜索区域 -->
        <el-col :span="7">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @keyup.enter="getGoodsList"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <!-- 头部添加商品 -->
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table 表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name" width=""></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70"></el-table-column>
        <el-table-column label="创建时间" width="150">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" round></el-button>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              round
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 7, 10, 15]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'List',
  data() {
    return {
      // 分页查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表数据
      goodsList: [],
      // 商品总数据条数
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分类获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })

      if (res.meta.status !== 200) {
        // 提示获取失败
        return this.$message.error(res.meta.msg)
      }

      // 将获取到的数据添加到 data 中
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据 id 删除对应的商品
    async removeById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }

      console.log('确定了删除')
      // 发起删除商品的网络请求
      const { data: res } = await this.$http.delete('goods/' + id)

      if (res.meta.status !== 200) {
        // 提示删除失败
        return this.$message.error(res.meta.msg)
      }

      // 提示删除成功
      this.$message.success(res.meta.msg)
      // 重新获取数据
      this.getGoodsList()
    },
    goAddpage() {
      this.$router.push('goods_add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
